42 lines
1.9 KiB
JavaScript
42 lines
1.9 KiB
JavaScript
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/**
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* 树莓派状态 JSON 数据接口
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*/
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require('dotenv').config()
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const fs = require('fs')
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const http = require('http')
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const hostname = require('os').hostname()
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const exec = require('child_process').exec
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const MEMINFO_FILE_PATH = '/proc/meminfo'
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const TEMPERATURE_FILE_PATH = '/sys/class/thermal/thermal_zone0/temp'
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const server = http.createServer(function (request, response) {
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response.setHeader('Access-Control-Allow-Origin', '*')
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response.setHeader('Access-Control-Allow-Methods', 'HEAD,GET,POST,OPTIONS,PATCH,PUT,DELETE')
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response.setHeader('Access-Control-Allow-Headers', 'Origin,X-Requested-With,Authorization,Content-Type,Accept,Z-Key')
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response.setHeader('Content-Type', 'application/json')
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try {
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const temp_string = fs.readFileSync(TEMPERATURE_FILE_PATH)
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const meminfo_string = String(fs.readFileSync(MEMINFO_FILE_PATH))
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const meminfo_total = meminfo_string.match(/MemTotal\:\s+(\d+) kB/)
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const meminfo_available = meminfo_string.match(/MemAvailable\:\s+(\d+) kB/)
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const result = {
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hostname,
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cpu: {
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temperature: Number((temp_string / 1000).toFixed(3)),
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},
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memory: {
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total: Number((meminfo_total[1] / 1024).toFixed(2)),
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available: Number((meminfo_available[1] / 1024).toFixed(2))
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},
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}
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exec("cat /proc/stat |grep cpu |tail -1|awk '{print ($5*100)/($2+$3+$4+$5+$6+$7+$8+$9+$10)}'|awk '{print 100 - $1}'", (err, stdout, stderr) => {
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result.cpu.load = Number((stdout / 100).toFixed(4))
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response.end(JSON.stringify(result))
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})
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} catch (error) {
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response.statusCode = 500
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response.end(JSON.stringify({ error }))
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}
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})
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const port = process.env.PORT || 3000
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server.listen(port, () => console.log(`rpi status http server running at http://localhost:${port}`);)
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